java-1.5.0-gcj will obsolete java-1.4.2-gcj-compat and will provide
/usr/lib/jvm/java-1.5.0-gcj/bin/javah. Initial builds of java-1.5.0-gcj will
include a compatibility symlink from /usr/lib/jvm/java-1.4.2-gcj-1.4.2.0 to
/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0 until libgcj is rebuilt with
java.home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0.